I saw about a year ago a post where someone had a bell-housing adaptor and put a viper tranny into an FD. Anyone have any info on this, my tranny is about shot(crunches in 3rd, no more 5th and no reverse).

 

you sure it wasnt a LS1 swapped FD??? Cause I'm pretty sure the Ls1 and Viper both share the T-56 tranny.

 

thats what im thinking,but you never know..

 

Man, your tranny has been abused! Just drop a new/rebuilt one in. They are not that expensive and are actually pretty damn tough. The T-56 is for LS-1 cars.....

 

And rustangs... among others...

 

my buddy is selling a trani if your interested. pm me.

 

is it possible to fit a T56 on a 13B or 20B?

obviously it wont bolt on directly... but is there a kit out there or sumthing where i can

 

http://www.kennedyeng.com/other.htm
is one of the adapters to the t-5 t-56 trans to the rotary bellhousing not to mention the search button does wonders w/ a little time i did some research about it awhile ago unfortunatlly i forgot half of it by now now here is one adapter but i had found another somewhere on the forums dont remember where

z

 

Just remember you also need to adapt to the PPF.

Dave

 

kiwi racing out of austraila makes an adapter to bolt a supra 6 spd to an fd. to get away from the powerplant frame, solid mount the tranny, and a-spec makes a differential solid mount. problem solved

 

solid mount the tranny? On a street car? Oh that would be fun.

There is no point to a 6-speed on a street driven FD....

Besides all of this, I doubt the gear ratios in the Viper T-56 are at all suited to an FD's powerband. You are going to end up with taller ratios than stock (taller = slower) and a nearly unusable 6th gear.

 

i think a supra 6 spd would work nice in an fd, just personal opinion

 

Gears are gears. If they don't break and have the right ratios, they're good gears. Unless you're swapping away from the synchromesh design I can't see any point whatsoever.

Not sure why it's important to get away from the PPF, either. The car chassis was designed with the fact that the PPF would handle all drivetrain torque. I can't believe for a moment that it would be better to throw the PPF away. Even if you managed to reinforce that section of chassis, it's going to be heavier than using the PPF concept.

Dave

 

opinion based on what? Have you even looked at the gear ratios? What is the benefit vs the stock tranny?

 

I'll sell you my tranny for cheap, but you'd have to rebuild it. It just grinds in high rpm shifting in 2nd and 3rd. It will rarely, and when I say rarely, I mean like maybe once a month grind in 5th. I think the only thing that would kill my deal, is you paying for shipping.

-Jeff

 

I belive also that the clutch in the FD is a "Pull" setup and the T56 is a Push setup, so you have to re-do the clutch slave cylinder, or at least you do on a V8 Swap.... besides the bellhousing and supports, you might also have to re-route or create custum piping for exhaust... since things get tight in that area...

 

every 6 spd car ive driven in ive just like the tighter gear ratios. and as far as weight goes, the ppf weighs a decent amount, and ive seen people mount a solid mount brace straight across, as well for the rear diff, wich i have no personal experience with how they affect the car, but have seen it done on track cars and i would think it would cut weight down a bit

 

Here's good info for you with actual math, courtesy of Jimlab. https://www.rx7club.com/showthread.p...hlight=6-speed

You are talking about pure track cars with drivetrain parts bolted rigidly to the chassis. Even some of the hardcore idiots on this forum wouldn't like that for driving on the street.

 

Just buy a JDM trans from japan2la and get it over with.

 

I have the JDM .806 5th gear. Going from 4th to 5th now is a dream with better high speed acceleration. It perfectly matches the step up from 4th. But it does limit top speed; not important in the USA. If you lived in Germany, having a 6th at the original 5th .719 would be needed.